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ipa: raspberrypi: Use std::optional in DeviceStatus

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Switch the aperture, lens_position, and flash_intensity fields in the
DeviceStatus structure to use std::optional instead of using invalid default
values.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Naushir Patuck 2022-06-29 09:57:22 +01:00 • committed by Kieran Bingham
parent 95151dd06f
commit 8acfb8494c
3 changed files with 15 additions and 12 deletions
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14
src/ipa/raspberrypi/controller/device_status.cpp
View file

@ -12,10 +12,16 @@ std::ostream &operator<<(std::ostream &out, const DeviceStatus &d)
{
out << "Exposure: " << d.shutter_speed
<< " Frame length: " << d.frame_length
<< " Gain: " << d.analogue_gain
<< " Aperture: " << d.aperture
<< " Lens: " << d.lens_position
<< " Flash: " << d.flash_intensity;
<< " Gain: " << d.analogue_gain;
if (d.aperture)
out << " Aperture: " << *d.aperture;
if (d.lens_position)
out << " Lens: " << *d.lens_position;
if (d.flash_intensity)
out << " Flash: " << *d.flash_intensity;
if (d.sensor_temperature)
out << " Temperature: " << *d.sensor_temperature;

9
src/ipa/raspberrypi/controller/device_status.h
View file

@ -19,8 +19,7 @@
struct DeviceStatus {
DeviceStatus()
: shutter_speed(std::chrono::seconds(0)), frame_length(0),
analogue_gain(0.0), lens_position(0.0), aperture(0.0),
flash_intensity(0.0)
analogue_gain(0.0)
{
}
@ -32,11 +31,11 @@ struct DeviceStatus {
uint32_t frame_length;
double analogue_gain;
/* 1.0/distance-in-metres, or 0 if unknown */
double lens_position;
std::optional<double> lens_position;
/* 1/f so that brightness quadruples when this doubles, or 0 if unknown */
double aperture;
std::optional<double> aperture;
/* proportional to brightness with 0 = no flash, 1 = maximum flash */
double flash_intensity;
std::optional<double> flash_intensity;
/* Sensor reported temperature value (in degrees) */
std::optional<double> sensor_temperature;
};

4
src/ipa/raspberrypi/controller/rpi/lux.cpp
View file

@ -63,9 +63,7 @@ void Lux::Process(StatisticsPtr &stats, Metadata *image_metadata)
DeviceStatus device_status;
if (image_metadata->Get("device.status", device_status) == 0) {
double current_gain = device_status.analogue_gain;
double current_aperture = device_status.aperture;
if (current_aperture == 0)
current_aperture = current_aperture_;
double current_aperture = device_status.aperture.value_or(current_aperture_);
uint64_t sum = 0;
uint32_t num = 0;
uint32_t *bin = stats->hist[0].g_hist;